在我的Android应用程序中,我正在使用旋转器,我已经从SQLite数据库加载数据到旋转器中,它工作正常。这是它的代码。
Spinner spinner = (Spinner) this.findViewById(R.id.spinner1);
List<String> list = new ArrayList<String>();
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String> (this,android.R.layout.simple_spinner_item, list);
cursor.moveToFirst();
list.add("All Lists");
if (cursor.getCount() > 0) {
for (int i = 0; i < cursor.getCount(); i++) {
keyList[i] = cursor.getString(cursor.getColumnIndex(AndroidOpenDbHelper.KEYWORD));
list.add(keyList[i]);
cursor.moveToNext();
}
}
Database.close();
cursor.close();
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(dataAdapter);
现在我想要改变旋转数据的文本颜色和文本大小。我在XML文件上使用了以下XML行作为旋转标记,但它不起作用。
android:textColor="@android:color/white"
android:textSize="11dp"
我如何改变我的转轮的文本颜色和文本大小?
为了防止滞后,你不仅需要在onItemSelected监听器中设置文本属性,还需要在Activity的onCreate方法中设置文本属性(但这有点棘手)。
具体来说,你需要在设置适配器后把这个放在onCreate中:
spinner.setSelection(0, true);
View v = spinner.getSelectedView();
((TextView)v).setTextColor(backgroundColor);
然后把这个放到onItemSelected中:
((TextView) view).setTextColor(backgroundColor);
下面是一个完整的例子:
@Override
protected void onCreate(Bundle savedInstanceState)
{
Spinner spinner = (Spinner) findViewById(R.id.spinner);
//Set the choices on the spinner by setting the adapter.
spinner.setAdapter(new SpinnerAdapter(toolbar.getContext(), new String[]{"Overview", "Story", "Specifications", "Poll", "Video"}, accentColor, backgroundColor));
//Set the text color of the Spinner's selected view (not a drop down list view)
spinner.setSelection(0, true);
View v = spinner.getSelectedView();
((TextView)v).setTextColor(backgroundColor);
//Set the listener for when each option is clicked.
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
{
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
{
//Change the selected item's text color
((TextView) view).setTextColor(backgroundColor);
}
@Override
public void onNothingSelected(AdapterView<?> parent)
{
}
});
}
要了解更多细节,请参见我的问题。
我是这样做的。我已经使用getDropDownView()和getView()方法。
对于打开的微调器使用getDropDownView()。
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
LayoutInflater vi = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = vi.inflate(R.layout.context_row_icon, null);
}
TextView mTitle = (TextView) view.findViewById(R.id.context_label);
ImageView flag = (ImageView) view.findViewById(R.id.context_icon);
mTitle.setText(values[position].getLabel(activity));
if (!((LabelItem) getItem(position)).isEnabled()) {
mTitle.setTextColor(activity.getResources().getColor(R.color.context_item_disabled));
} else {
mTitle.setTextColor(activity.getResources().getColor(R.color.context_item));
}
return view;
}
关闭的微调器使用getView()。
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
LayoutInflater vi = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = vi.inflate(R.layout.context_row_icon, null);
}
TextView mTitle = (TextView) view.findViewById(R.id.context_label);
ImageView flag = (ImageView) view.findViewById(R.id.context_icon);
mTitle.setText(values[position].getLabel(activity));
mTitle.setTextColor(activity.getResources().getColor(R.color.context_item_disabled));
return view;
}
我们可以像这样改变旋转器的textview设置主题的样式:
styles.xml:
<style name="mySpinnerItemStyle" parent="@android:style/Widget.Holo.DropDownItem.Spinner">
<item name="android:textSize">@dimen/_11ssp</item>
<item name="android:textColor">@color/blue</item>
<item name=...</item>
</style>
then
<Spinner
android:theme="@style/mySpinnerItemStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
如果你想改变纺纱机的textview属性编程式:
编程:
val textView = (view.getChildAt(0) as TextView)
textView.setTextColor(resources.getColor(R.color.dark_mode))
如果所有的旋转框对它们的TextView项可能有相同的文本颜色,另一种方法是为旋转框下拉项使用自定义样式:
在res /价值/ styles.xml:
<resources>
<style name="AppBaseTheme" parent="android:Theme.Light">
</style>
<style name="AppTheme" parent="AppBaseTheme">
<item name="android:spinnerDropDownItemStyle">@style/mySpinnerItemStyle</item>
</style>
<style name="mySpinnerItemStyle" parent="@android:style/Widget.Holo.DropDownItem.Spinner">
<item name="android:textColor">@color/my_spinner_text_color</item>
</style>
</resources>
并在res/values/colors.xml中定义自定义颜色:
<color name="my_spinner_text_color">#808080</color>